Soil-Steel Structures and the Canadian Highway Bridge Design Code

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The Canadian Highway Bridge Design Code (CHBDC) is the new Canadian design standard for bridge structures over three metres in span. Soil-steel structures fall into the category of buried structures, which is the subject of Section 7 of the Code. Most of the soil-steel structure design methods used prior to the CHBDC were based on working stress, while the new CHBDC is based on the limit states design method developed for the Ontario Highway Bridge Design Code (OHBDC). The CHBDC also includes a specific check of strength requirements during construction, which was not in the OHBDC. This part of the design method replaces the flexibility factor check of the previous design methods. The purpose of this paper is to: review the historic design methods used for soil-steel structures, provide a detailed description of the philosophies used in the CHBDC and AISI (American Iron and Steel Institute) methods, including a description of the critical differences between the methods, and report on a comparison of design results using the two methods. For the covering abstract of this conference see ITRD number E211395.The CHBDC also includes a specific check of strength requirements during construction, which was not in the OHBDC. This part of the design method replaces the flexibility factor check of the previous design methods.

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Soil-Steel Structures and the Canadian Highway Bridge Design Code

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- 2003

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